1. School of Chemistry and Chemical Engineering
2. Southeast University
3. Nanjing 210089
4. P. R. China
5. Laboratory of Organic Chemistry
6. ETH Zurich
7. 8093 Zurich
8. Switzerland
9. Key Laboratory of Antibody Technique of Ministry of Health
10. School of Pathology
11. Nanjing Medical University
12. Nanjing 210093